An English zoologist who specialised in the study of birds, he was the ornithologist responsible for the avian collections in the British Museum. He showed special interest in taxonomy and phylogeny throughout his brilliant professional career. His huge body of work made a notable contribution to increasing zoological KNOWLEDGE, and was reflected in hundreds of specialist books and articles. This includes his principle work: the Catalogue of the Birds in the British Museum (27 volumes). The zoology collection of the Royal Seminary holds a piece which belonged to the private study collection of this eminent scientist.